Cited by 1,566Inflammatory Bowel DiseaseEscherichia coli research studiesGut microbiota and health

High prevalence of adherent-invasive Escherichia coli associated with ileal mucosa in Crohn’s disease

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Darfeuille-Michaud, Arlette, Boudeau, Jérôme, Bulois, Philippe, Neut, Christel, Glasser, Anne-Lise, Barnich, Nicolas, Bringer, Marie-Agnès, Swidsinski, Alexander +2 more·2004·Gastroenterology

Abstract

Background & aims Adherent-invasive Escherichia coli (AIEC) pathovar has been identified in the intestinal mucosa of patients with Crohn's disease (CD). AIEC reference strain LF82 is able to adhere to intestinal epithelial cells, to invade epithelial cells via a mechanism involving actin polymerization and microtubules, and to survive and replicate within macrophages. This study was performed to assess the prevalence of AIEC associated with intestinal mucosa of patients with CD, ulcerative colitis (UC), and of controls. Methods A search for E. coli strains was performed with ileal specimens of 63 patients with CD and 16 controls without inflammatory bowel disease (IBD), and with colonic specimens of 27 patients with CD, 8 patients with UC, and 102 controls. The abilities of E. coli strains to invade epithelial cells and to survive and replicate within macrophages were assessed using the gentamicin protection assay. Bacterial uptake by epithelial cells was analyzed using cytoskeletal inhibitors. Bacterial adhesion was quantified with Caco-2 and Intestine-407 cells. The presence of known E. coli virulence genes was assessed by polymerase chain reaction and DNA hybridization. Results In ileal specimens, AIEC strains were found in 21.7% of CD chronic lesions vs. in 6.2% of controls. In neoterminal ileal specimens, AIEC strains were found in 36.4% of CD early lesions (P = 0.034 vs. controls) and 22.2% of healthy mucosa of CD patients. In colonic specimens, AIEC strains were found in 3.7% of CD patients, 0% of UC patients, and 1.9% of controls. Conclusions AIEC strains are associated specifically with ileal mucosa in CD.

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Crossref · 10.1053/j.gastro.2004.04.061

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Authors
Darfeuille-Michaud, A., Boudeau, J., Bulois, P., Neut, C., Glasser, A.-L., Barnich, N., Bringer, M.-A., Swidsinski, A., Beaugerie, L., & Colombel, J.-F.
Affiliations
  • Université Clermont Auvergne (FR)
  • Inserm (FR)
  • Université de Lille (FR)
  • Humboldt-Universität zu Berlin (DE)
  • Assistance Publique – Hôpitaux de Paris (FR)
Venue
Gastroenterology
Publisher
Elsevier BV
Published
2004-08
Volume
127
Issue
2
Pages
412-421
ISSN
0016-5085 (ISSN-L)
OpenAlex
W2153905079
Cited by
1,566
References
52
Citations by year
2026: 54 · 2025: 49 · 2024: 74 · 2023: 82 · 2022: 79 · 2021: 100 · 2020: 79 · 2019: 77 · 2018: 86 · 2017: 70 · 2016: 90 · 2015: 90 · 2014: 90 · 2013: 75 · 2012: 80
FWCI
24.45
Type
journal article
Language
en
Open access
Locations
  • Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Endocrinology › Escherichia coli research studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
Keywords
adherent-invasive Escherichia coli, Crohn's disease, ulcerative colitis, ileal mucosa, bacterial adhesion, epithelial cell invasion, macrophage survival, actin polymerization, inflammatory bowel disease
MeSH terms
Actins, Adult, Bacterial Adhesion, Colitis, Ulcerative, Crohn Disease, Escherichia coli, Escherichia coli Infections, Female, Humans, Ileum, Intestinal Mucosa, Macrophages, Male, Microscopy, Electron, Microtubules, Virulence, Prevalence, Caco-2 Cells

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